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China Telecom, Unicom or Mobile: Best for International Internet?

All three Chinese carriers work for international internet with a good VPN. What differs between them, what our customers use, and why foreign eSIMs are slower.

Updated October 2026.

The short answer

For international internet from mainland China, the route your VPN takes matters more than the carrier on your line. In our support experience, China Telecom, China Unicom and China Mobile home and office lines all reach full speed with Throughwire. Choose the carrier with the best line in your building, and avoid foreign eSIMs for heavy work.

Table of contents

Which Chinese carrier is best for international internet?

Mainland China has three big carriers: China Telecom, China Unicom and China Mobile. Each sells home broadband, office lines and mobile SIM cards, and each carries traffic between China and the rest of the world.

People often ask which one is "best for VPN". The honest answer is that, for most homes and offices, the carrier on your line is not the deciding factor. What decides how Google, Zoom or ChatGPT feel is the path your traffic takes once it leaves China, and that is chosen by your VPN provider, not by you.

So the practical advice is simple:

  • At home: pick whichever carrier offers the most reliable line in your building, often fibre. If your building only has one carrier, take it.
  • In an office: the same rule applies. A stable line matters more than the brand.
  • On your phone: a Chinese SIM from any of the three works well for everyday use.
  • What to avoid for heavy work: foreign eSIMs and Hong Kong SIMs, which take a detour (explained below).

How do the three carriers connect China to the rest of the world?

Each carrier runs more than one kind of international connection. In plain terms there are two tiers:

  • Standard international paths. These carry ordinary home broadband and mobile data. They are shared by a very large number of people, which is why they slow down in the evening.
  • Premium international networks. These are sold to businesses, data centres and service providers. They cost more and are less crowded.

A study published on the APNIC blog in August 2020 by a University of California, Riverside team noted that "all of the three state-owned ISPs have set up a premium transnational network". Looking at China Telecom's tiers of service, it found that "the loss rate does decrease with the tier of networks" (APNIC, 2020). That study is now several years old, so read it as background, not as today's numbers.

China Telecom describes its two main networks on its own Americas website (checked October 2026). ChinaNet is "a robust Internet network carrying the highest number of broadband subscribers in China", and CN2 is its "next-gen carrier network delivering highly efficient global transit services" (China Telecom Americas). China Unicom and China Mobile also run their own international networks, under China Unicom Global and China Mobile International.

Older data is easy to misread. A ThousandEyes benchmark from about February 2017 described China's internet as "primarily dominated by two ISPs (China Telecom and China Unicom)" (ThousandEyes, about 2017). Among our customers' connections in the 30 days to 19 October 2026, China Mobile was the second most common network, so that picture has changed, at least for the people we serve.

What this means for you: a home user cannot buy a premium international network for one flat. What you can choose is a service whose servers connect into China over a good route. That choice usually matters more than whether your flat has Telecom, Unicom or Mobile.

Which networks do our customers actually use?

Here is the mix of networks our customers connected from, from our network data for the 30 days to 19 October 2026. It counts connections, not customers, across more than a million connections, and it includes home broadband, office lines and phones on mobile data.

Network customers connected fromShare of connections
China Telecom47%
China Mobile27%
China Unicom18%
Foreign or eSIM networks4%
Hong Kong or international networks2%
Other1%

A few things stand out:

  • China Telecom is the most common network, at almost half of all connections.
  • China Mobile is second, ahead of China Unicom.
  • About 6% of connections came from foreign, eSIM, Hong Kong or international networks. These are the connections we most often help people move off for heavy work.

This is what our customers use, not a market share for China as a whole.

Does your carrier change your speed with Throughwire?

In our support experience, full speed is expected on China Telecom, China Mobile and China Unicom home and office lines. When someone writes to us about speed and they are on one of the three, we do not start by telling them to change carrier.

We do not publish speed per carrier yet, so we will not claim that one carrier is faster than another with Throughwire. When we quote speed, we use the figures we measure across our network: in the same 30 days, the median customer's top speed was 90 Mbps, and at least 20 customers reached or beat 335 Mbps in confirmed readings (see our network stats).

Your own experience still depends on things close to you:

  • Your plan and your building's line. A slow or unstable local line limits everything, Chinese sites included.
  • Wi-Fi. A cable to your computer or router is steadier than Wi-Fi in a crowded apartment block.
  • The time of day. Evenings are busier on every carrier. Our guide on why VPNs slow down in the evening explains what our data shows.

Why is a foreign eSIM or a Hong Kong SIM slower?

Travel eSIMs and Hong Kong SIM cards are popular with visitors because they are easy to set up before a trip. The catch is the path. In our support experience, foreign eSIMs and Hong Kong networks send your data through Hong Kong before it goes anywhere else, and that detour makes them slower than a Chinese home or office line.

With a VPN on top, the data makes the trip twice: out to Hong Kong through the SIM provider, then on to the VPN server, then back. Each extra stretch adds delay and another place where things can slow down.

What we suggest:

  • For maps, messages and light browsing on a short trip, a foreign eSIM is convenient.
  • For video calls, large uploads or a full working day, use a Chinese line: your home or office broadband, or a Chinese SIM's mobile data.
  • If you have a Throughwire router, connect your laptop to its Wi-Fi rather than tethering to a foreign eSIM.

Our guide to eSIMs in China covers the trade-offs in more detail.

What about company, campus and shared networks?

Company networks often sit behind a firewall run by the company's IT team, and in our support experience they can block outbound connections that a VPN needs. If you are on a company network, ask your IT team what is allowed. Some companies already pay for an approved cross-border connection for their internal systems.

University networks have their own rules. In late September 2026, 20 students at Harbin Engineering University received disciplinary warnings for using unauthorized VPNs, according to a China Digital Times report of 14 October 2026. Read your institution's rules before using a campus network for this.

Hotel, café and coworking Wi-Fi runs on one of the three carriers' lines but is shared with everyone else on it, so it can be slow at busy times. Your own line or a Chinese SIM is usually steadier.

This is general information, not legal advice.

Which carrier should you choose?

SituationWhich carrierNotes
Renting a flat and choosing home broadbandWhichever offers the most reliable line in your buildingChina Telecom was the most common network among our customers (47% of connections).
Building offers only one carrierThat oneTelecom, Unicom and Mobile home lines are all expected to reach full speed with Throughwire.
Small officeAny of the three, on a stable business lineKeep the carrier's router and add a GL.iNet router for the whole office.
Phone data while out and aboutYour Chinese SIM's carrierFine for calls and messages with Throughwire on your phone.
Short visit with a foreign eSIMKeep it for maps and messagesMove heavy work to Wi-Fi on a Chinese line.
Hong Kong SIM used in mainland ChinaSwitch to a Chinese line for workData goes through Hong Kong first, which is slower.
Company or campus networkNot your choiceCheck the rules; these networks can block outbound connections.
Video calls every eveningAny of the threeUse a cable or a router, and read about choosing your route.

If you are setting up a whole home or office, the router setup guide for China offices explains how one router covers every device on any of the three carriers.

How can you check which network you are on?

The quickest way is our network check page. Open it on the device you want to check. It reads the network you are connecting from and tells you, in plain words, whether it is a network we expect to give full speed:

  • With Throughwire off, it shows your carrier (China Telecom, China Unicom or China Mobile) and reminds you to switch Throughwire on.
  • With Throughwire on, it confirms you are connected through Throughwire.
  • On a foreign eSIM, another VPN or a proxy, it says you are not at full speed and suggests switching back to your Chinese SIM or Wi-Fi.

Other easy checks:

  • The modem on the wall (the fibre box your carrier installed) usually carries the carrier's logo: 中国电信, 中国联通 or 中国移动.
  • Your broadband bill or app names the carrier.
  • On your phone, the carrier name appears in the status bar or in your mobile settings.

When Throughwire isn't the right choice

  • You only use Chinese apps. If your day is WeChat, Taobao, Bilibili and Baidu, you do not need any VPN, and your carrier choice should be about price and service.
  • Your company needs a licensed cross-border connection. Some companies need contracted bandwidth for internal systems, bought through licensed carriers. Our guide to office internet options in China compares those with a VPN router.
  • You will only ever be on a foreign eSIM. For a three-day trip with light use, the eSIM alone may be enough, and you may not need us at all.
  • You are on a network that blocks outbound connections. No VPN works reliably there. Use another network or ask the network's owner.

Common questions

Is China Telecom better than China Mobile for a VPN?

Not in our support experience. Full speed is expected on China Telecom, China Mobile and China Unicom home and office lines. We do not publish speed per carrier yet, so we do not rank them. The route your VPN uses into China matters more.

Is China Mobile broadband slow for international sites?

It does not have to be. China Mobile made up 27% of our customers' connections in the 30 days to 19 October 2026, and we expect full speed on its home and office lines with Throughwire. Without a VPN, many international services are blocked on every carrier anyway.

Can I buy a premium international line for my home?

Not in a practical way. Premium international networks are sold to businesses, data centres and service providers. As a home user, you benefit from them by choosing a service whose servers connect into China over a premium route.

Will a faster broadband plan make international sites faster?

A little, sometimes. A faster plan raises the ceiling on your own line, but evening slowdowns usually happen further away, on shared international paths. Fix Wi-Fi and the route first.

Does 5G help with international speed?

5G can give a fast local connection, but your data still leaves China over the same carrier networks as any other connection. Use whichever is steadier where you are, and switch to a cable or home Wi-Fi for long calls.

How do I know if I am on a foreign eSIM by mistake?

Open our network check page on your phone. If it says you are not at full speed and names a foreign or Hong Kong network, switch your mobile data back to your Chinese SIM.

Details for your IT team

  • Carrier networks by ASN (registry names checked on RIPEstat, October 2026): China Telecom ChinaNet AS4134 and CN2 AS4809; China Unicom China169 AS4837 and CUII AS9929, with China Unicom Global on AS10099; China Mobile AS9808, with China Mobile International on AS58453.
  • Our carrier mix classifies each customer connection by the network's ASN and name. It counts connections, not customers, so heavy users and phones that reconnect often weigh more.
  • Our Los Angeles route (High Speed) uses China Telecom's premium CN2 GIA route into China. We do not claim CN2 GIA for the Osaka or Singapore routes.
  • Measurements: network stats methodology 1.3.0, server telemetry for the 30 days to 19 October 2026. We have not published measured latency, jitter or packet loss yet, and we do not yet publish speed per carrier.
  • Company networks: the apps and router need outbound connections to our servers. Networks that only allow web traffic through a proxy, or inspect and block unknown encrypted traffic, will not work reliably.